pidgin/pidgin

Add icon-name, icon-search-path, and icon-resource-path to PurpleProtocol

These are now used by pidgin_create_icon_from_protocol which will attempt to
load the icon for the protocol from the default GtkIconTheme if the protocol
has a non NULL value for icon-name.

pidgin_ui_init was also updated to add icon-search-path and icon-resource-path
to the default GtkIconTheme when a protocol is registered. It also scans all of
the protocols that have been already been registered as that happens before the
ui is initialized.

Testing Done:
Removed old local icon and then ran with an inverted icon to make sure pidgin was displaying the icon from the resource.

Reviewed at https://reviews.imfreedom.org/r/790/
#include <winver.h>
VS_VERSION_INFO VERSIONINFO
FILEVERSION @PURPLE_MAJOR_VERSION@,@PURPLE_MINOR_VERSION@,@PURPLE_MICRO_VERSION@,0
PRODUCTVERSION @PURPLE_MAJOR_VERSION@,@PURPLE_MINOR_VERSION@,@PURPLE_MICRO_VERSION@,0
FILEFLAGSMASK 0
FILEFLAGS 0
FILEOS VOS__WINDOWS32
FILETYPE VFT_APP
FILESUBTYPE VFT2_UNKNOWN
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904B0"
BEGIN
VALUE "CompanyName", "The Pidgin developer community"
VALUE "FileDescription", "Finch UI library"
VALUE "FileVersion", "@PURPLE_VERSION@"
VALUE "InternalName", "libfinch"
VALUE "LegalCopyright", "Copyright (C) 1998-2014 The Pidgin developer community (See the COPYRIGHT file in the source distribution)."
VALUE "OriginalFilename", "libfinch-@PURPLE_API_VERSION@.dll"
VALUE "ProductName", "Finch"
VALUE "ProductVersion", "@PURPLE_VERSION@"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END