[Toaster] [review-request] 7414-cut the prefix from layer file paths for bitbake variables

[Lerner, Dave]

http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=lerner/trim_varpath_7414


Page Testing:
Create project using yocto master which includes openembedded-core, meta-yocto and meta-yocto-bsp, then add layers meta-oe, meta-games.
Build the project.

Open the build, configuration page, bitbake variables.  
Note the following types of variable path names in the "Set in file" column and when clicking the variable in the History.

Variable: B
Set in file/history:  meta/conf/bitbake.conf

Variable: BBFILE_PATTERN_core
Set in file: full path to configure
History: first meta/conf/layer.conf, then /path/_poky_master.toaster_cloned/bitbake/lib/bb/data_smart.py

Variable: BBFILE_PATTTERN_games-layers
Set in file and History: meta-games_master.toaster_cloned/conf/layer.conf


HTML Validation: Pass
Dave Lerner