Add Paths class to define platform dependent paths
Define RedhatPrefix
update todo
update macports requirement
update requirement
update changelog
disable hook
use 'command' to execute $BIN
Checking in changes prior to tagging of version 1.10.5.
re-compile phpbrew
Add Paths class to define platform dependent paths
Define RedhatPrefix
Checking in changes prior to tagging of version 1.10.5.
Merge branch 'platform_paths' of github.com:c9s/phpbrew into platform_paths

Conflicts:
	README.md
	composer.json
	phpbrew
Rewrite env command to shell version, this is faster.
Add __phpbrew_platform_prefix function to get prefix
use __phpbrew_set_lookup_prefix to setup lookup prefix
document lookup-prefix command
use PHPBREW_LOOKUP_PREFIX for finding libraries.
smarter path detection based on the lookup prefix tools.