stdlib: all code read under sys package.

Another part of the preparation for an upcoming change.
All library code is now read in the sys package, so any
symbols that are interned (local variables and whatnot)
are in sys and will not be exposed to user code.

We have to overcome some annoyances to achieve this:

- We have to stay away from the symbols exp or var,
  because they are now sys:exp and sys:var with their
  special meaning.

- Instances in which a symbol of the same name exists
  in both sys and usr present a problem; the plain
  symbol now is the usr one. For instance rplaca
  will refer to sys:rplaca, so a small amount of
  code has to explicitly use usr:rplaca.

* Makefile (COMPILE_TL): Change to the sys package before
compiling library code.

* lisplib.c (lisplib_try_load): Bind *package* to the system
package.

* share/txr/stdlib/asm.tl, share/txr/stdlib/compiler.tl:
Remove in-package macro invocation; we don't need this since
all files are loaded or compiled in the sys package.

* share/txr/stdlib/build.tl, share/txr/stdlib/cadr.tl,
share/txr/stdlib/conv.tl, share/txr/stdlib/doloop.tl,
share/txr/stdlib/error.tl, share/txr/stdlib/error.tl,
share/txr/stdlib/except.tl, share/txr/stdlib/ffi.tl,
share/txr/stdlib/getopts.tl, share/txr/stdlib/getput.tl,
share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl,
share/txr/stdlib/keyparams.tl, share/txr/stdlib/op.tl,
share/txr/stdlib/package.tl, share/txr/stdlib/path-test.tl,
share/txr/stdlib/place.tl, share/txr/stdlib/pmac.tl,
share/txr/stdlib/socket.tl, share/txr/stdlib/stream-wrap.tl,
share/txr/stdlib/struct.tl, share/txr/stdlib/tagbody.tl,
share/txr/stdlib/termios.tl, share/txr/stdlib/trace.tl
share/txr/stdlib/txr-case.tl, share/txr/stdlib/type.tl,
share/txr/stdlib/ver.tl, share/txr/stdlib/with-resources.tl,
share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl:
Deal with the various usr versus sys symbol issues.

1 files changed, 2 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index fa6245d3..b192d565 100644
--- a/Makefile
+++ b/Makefile
@@ -144,7 +144,8 @@ endef
 
 define COMPILE_TL
 $(call ABBREV,TXR)
-$(call SH,$(TXR) -e "(compile-file \"$<\" \"$@.tmp\")")
+$(call SH,$(TXR) -e \
+          "(progn (in-package sys) (compile-file \"$<\" \"$@.tmp\"))")
 $(call SH,mv $@.tmp $@)
 endef