Write pure Makefile + config.mk

`make install` runs, not sure how correct the build is yet!
Removed bulk of autotools build system.
More work on cleaning up and fixing Makefile and config.mk
Write uninstall target.
More Makefile cleanups, fix m4 variables in templates.
Fix various -Wextra warnings.

Unused variables, signed/unsigned comparisons.
Fix unused parameter warnings in test suite.
Replace all @variables@ in manpages with m4 macro variables.
Renamed several make macros for readability.