Yet another fix for c_lib/scons stuff

[craigcitro]

The scons setup was still sub-par, and after some discussion, we've come up with what looks like a good solution. Here's the new system ... first, we reorganize $SAGE_ROOT/devel/sage/c_lib into c_lib/src and c_lib/include, and removed some cruft in the c_lib directory. We now have two symlinks:

$SAGE_ROOT/local/lib/libcsage.[so|dylib] --> $SAGE_ROOT/devel/sage/c_lib/libcsage.[so|dylib]

$SAGE_ROOT/local/include/csage --> $SAGE_ROOT/devel/sage/c_lib/include

Now we've had to make some changes to spkg-install to get this to work well. In particular, this patch should not be added until the next release, because getting it via hg_sage.pull() could break your working sage.

There are patches for both sage-main and scripts-main attached.

Email me (craig) if you have any issues with this patch.

Component: distribution

Keywords: c_lib

Issue created by migration from https://trac.sagemath.org/ticket/796

[craigcitro]

Attachment: clib_fix_sage-scripts.hg.gz

Attachment: clib_fix_sage-main.hg.gz