Fix problems to do with make dist/make distcheck not finding the source
file vg_libpthread.so.0.c.  Now:

* libpthread.so is built as just-another-so, like valgrind.so and
  valgrinq.so.

* there is a new dummy target libpthread.so.0 which is build just
  by a symlink.

Unfortunately for some reason, when the .so.0 is installed, it gets
a complete copy rather than just the symlink being copied.  But it
works, at least.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@68 a5019735-40e9-0310-863c-91ae7b9d1cf9
9 files changed