Merge pull request #46 from titanofold/master

Allow 'PG_CONFIG="/path/to/pg_config" make'
Whitespace tweaks.
Give credit where credit is due.
fixed bug in Makefile lines 54-56
Merge pull request #47 from akp999/master

Fixed bug in Makefile lines 54-56
Note Makefile fix from Eric Neault.
Fix signature length bug in function_privs_are().

Requires an upgrade script, and therefore also a bump in the version to v0.94.0.