- fix flags for Core and CGALQt shared libraries
- add $(CUSTOM_LDFLAGS) to $(CGAL_SHARED_LIB_LDFLAGS)
- move a few flags from $(CGAL_CGAL_LDFLAGS) to $(CGAL_LDFLAGS), so that
$(CGAL_CGAL_LDFLAGS) only contains -lCGAL (or the equivalent for other
compilers).
- new targets for libCGAL.a, libCGAL.so, libCGAL.so.*
- fix rules when SOVERSION is empty (use GNU/make idioms)
- Additional vpath in src/CGALQt/makefile, so that one can build it directly
from a checkout of the trunk.
- fix the build of libCGALBenchmark.
- fix the bison special stuff, so that we no longer rely on the expr and
the $(shell) function of GNU/make.