#136 Multiple bugs in Makefiles

[Anonymous]

There are several problems with a few of the Makefiles included in BLT. These problems include:

* Omission of '-p' flag to mkdir causes blt to fail to create directories in certain environments

* $(INSTALL_ROOT) missing from some installation commands; $(INSTALL_DIR) used in a few places where $(INSTALL_ROOT) should be used instead.

* BLT_LIBRARY not used consistently as the script installation directory

* libdir hardcoded to ${exec_prefix}/lib in ./configure

* Installion directory for headers can't be set using the --includedir configure switch

* Two man pages conflict with identically named files from tcllib and tk (graph.n and bitmap.n)

The attached patch fixes all of the above issues.

[Nobody/Anonymous]

Patch to fix Makefile bugs