Move the gcc-python-plugin out of /usr/bin.
Add write-dot-callgraph.py to EXTRA_DIST
Bump to version 0.4.
Adjust manpages to remove .py extension.
Revert "Adjust manpages to remove .py extension."

This reverts commit f9f2f617caa7bd762dd15df757460c05e564c1bd.
Correct man pages for renamed perf2gv and gv2link
Revert "Correct man pages for renamed perf2gv and gv2link"

This reverts commit b071b9d41b4a191c2464813612173436a399fd76.
Update the perf2gv and gv2linke pages to remove the .py extension.
Add some NEWS information
Fix up docs Makefile.am
Bump to 0.5