Modules can now use return values with the exit_module function.
Some return values are predefined, use them by passing special string
to the function.
Most of the functions also switched from a echo "true" to return 0
scheme, which means that every test involving theses functions was
rewritten.
No more need for the reset_vars function, as modules are run in
subshells, thus providing a new scope level.
The case when no modules is specified is better handled, a LÖVE file is
created by default.
A module should always begin with a test to `execute_module` to see if
it should be executed. As modules are always sourced
(even when embedded), a simple `return` will stop the subscript.
Modules are executed in a subscript, so the global space will not be
polluted, and will also be reset after the execution of the module.
This commit also solves some bugs in Makefile and lua parser.
What's new:
- --config flag to pass a INI config file to parse. See config.ini.
- Updated the modules scripts for configuration. Now needs to unset
variables passed by CLI or config.
- Fix release directory that was added in love file (maybe).
- Properly escapes sed arguments.
- chmod +x to getopt.sh and read_ini.sh
- Fix#12
