Rename stig executables

stig/stig (The compiler) -> stigc
stig/server/stig (Indy) -> stigi
stig/client/stig (C++ Client) -> stig_client

Closes #69
Moving TSession::Try to use the RAII fiber scheduler switcher
Removing some old unused code.
Merge pull request #107 from jmlvanre/master

Moving TSession::Try to use the RAII fiber scheduler switcher
Merge pull request #106 from cmaloney/rename_binaries

Rename stig executables
Make a 'make install'

Enables further progress on #101. Binaries are now installed in the
bin sub directory of the prefix specified
Refactor Makefile to be cleaner
Merge pull request #108 from cmaloney/make_install

Make install