pidgin/pidgin

Add configuration directory path to help window

2021-03-29, TANWEER ALI
628ec6b8efd4
Add configuration directory path to help window

Add `Runtime Directories Path` section to `Build Information` tab in `Help->About` window.

Testing Done:
Compile and run

![Changed](https://i.ibb.co/c3BvQMj/Screenshot-from-2021-03-28-04-28-52.png)

Bugs closed: PIDGIN-17504

Reviewed at https://reviews.imfreedom.org/r/577/
NULL_SOURCES = [
'nullprpl.h',
'nullprpl.c'
]
# nullprpl isn't built by default; when it is built, it's dynamically linked
if DYNAMIC_NULL
null_prpl = shared_library('null', NULL_SOURCES,
dependencies : [libpurple_dep, glib],
install : false, install_dir : PURPLE_PLUGINDIR)
endif