gitweb: Create Gitweb::Escape module
Create a Gitweb::Escape module in 'gitweb/lib/Gitweb/Escape.pm'
to store all the quoting/unquoting and escaping subroutines
regarding the gitweb.perl script.
This module imports $fallback_encoding variable from
Gitweb::Config module to use it in sub 'to_utf8'
Subroutines moved:
to_utf8
esc_param
esc_url
esc_html
esc_path
quot_cec
quot_upr
untabify
Update gitweb/Makefile to install Gitweb::Escape module alongside gitweb
Signed-off-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>