file layout: moving share/txr/stdlib to stdlib.

This affects run-time also. Txr installations where the
executable is not in directory ending in ${bindir}
will look for stdlib rather than share/txr/stdlib,
relative to the determined installation directory.

* txr.c (sysroot_init): If we detect relative to the short
name, or fall back on the program directory, use stdlib
rather than share/txr/stdlib as the stdlib_path.

* INSTALL: Update some installation notes not to refer to
share/txr/stdlib but stdlib.

* Makefile (STDLIB_SRCS): Refer to stdlib, not
share/txr/stdlib.
(clean): In unconfigured mode, remove the old share/txr/stdlib
entirely.  Remove .tlo files from stdlib.
(install): Install lib materials from stdlib.

* txr.1: Updated documentation under Deployment Directory Structure.

* share/txr/stdlib/{asm,awk,build,cadr}.tl:
Renamed to stdlib/{asm,awk,build,cadr}.tl.

* share/txr/stdlib/{compiler,conv,copy-file,debugger}.tl:
Renamed to stdlib/{compiler,conv,copy-file,debugger}.tl.

* share/txr/stdlib/{defset,doc-lookup,doc-syms,doloop}.tl:
Renamed to stdlib/{defset,doc-lookup,doc-syms,doloop}.tl.

* share/txr/stdlib/{each-prod,error,except,ffi}.tl:
Renamed to stdlib/{each-prod,error,except,ffi}.tl.

* share/txr/stdlib/{getopts,getput,hash,ifa}.tl:
Renamed to stdlib/{getopts,getput,hash,ifa}.tl.

* share/txr/stdlib/{keyparams,match,op,optimize}.tl:
Renamed to stdlib/{keyparams,match,op,optimize}.tl.

* share/txr/stdlib/{package,param,path-test,pic}.tl:
Renamed to stdlib/{package,param,path-test,pic}.tl.

* share/txr/stdlib/{place,pmac,quips,save-exe}.tl:
Renamed to stdlib/{place,pmac,quips,save-exe}.tl.

* share/txr/stdlib/{socket,stream-wrap,struct,tagbody}.tl:
Renamed to stdlib/{socket,stream-wrap,struct,tagbody}.tl.

* share/txr/stdlib/{termios,trace,txr-case,type}.tl:
Renamed to stdlib/{termios,trace,txr-case,type}.tl.

* share/txr/stdlib/{ver,vm-param,with-resources,with-stream}.tl:
Renamed to stdlib/{ver,vm-param,with-resources,with-stream}.tl.

* share/txr/stdlib/yield.tl: Renamed to stdlib/yield.tl.

* share/txr/stdlib/{txr-case,ver}.txr:
Renamed to stdlib/{txr-case,ver}.txr.

* gencadr.txr: Update to stdlib/place.tl.

* genman.txr: Update to stdlib/cadr.tl.

1 files changed, 54 insertions, 0 deletions

diff --git a/stdlib/doloop.tl b/stdlib/doloop.tl
new file mode 100644
index 00000000..56540d9e
--- /dev/null
+++ b/stdlib/doloop.tl
@@ -0,0 +1,54 @@
+;; Copyright 2017-2021
+;; Kaz Kylheku <kaz@kylheku.com>
+;; Vancouver, Canada
+;; All rights reserved.
+;;
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions are met:
+;;
+;; 1. Redistributions of source code must retain the above copyright notice, this
+;;    list of conditions and the following disclaimer.
+;;
+;; 2. Redistributions in binary form must reproduce the above copyright notice,
+;;    this list of conditions and the following disclaimer in the documentation
+;;    and/or other materials provided with the distribution.
+;;
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+;; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+;; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+;; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+(defun sys:expand-doloop (f vars cexp body)
+  (let ((xvars (mapcar (tc
+                         (((:whole w v i s . r))
+                          (if r (compile-error f "excess elements in ~s" w) w))
+                         (((:whole w v i . r))
+                          (if r
+                            (compile-error f "bad variable clause syntax ~s" w)
+                            ^(,v ,i ,i)))
+                         (((:whole w v . r))
+                          (if r
+                            (compile-error f "bad variable clause syntax ~s" w)
+                            ^(,v nil ,v)))
+                         ((v) ^(,v nil ,v)))
+                       vars))
+        (pllel (eq (car f) 'doloop)))
+    ^(,(if pllel 'for 'for*)
+       ,(mapcar (aret ^(,@1 ,@2)) xvars)
+       ,cexp
+       ((,(if pllel 'pset 'set) ,*(mappend (ado unless (eq @1 @3)
+                                             ^(,@1 ,@3))
+                                           xvars)))
+       (tagbody ,*body))))
+
+(defmacro doloop (:form f vars cexp . body)
+  (sys:expand-doloop f vars cexp body))
+
+(defmacro doloop* (:form f vars cexp . body)
+  (sys:expand-doloop f vars cexp body))