gutils: Don't use issetugid() on Android

Android had it in older versions but the new 64 bit ABI does not
have it anymore, and some versions of the 32 bit ABI neither.

https://code.google.com/p/android-developer-preview/issues/detail?id=168

https://bugzilla.gnome.org/show_bug.cgi?id=736351
Updated Hungarian translation
MSVC Builds: Update "Installation"

This updates the glib-install.[props|vsprops] so that the headers to
"install" for the build are kept up-to-date.  Note that this has been
generated by a script, so that this hopefully means that the header
"installation" can be maintained along with the autotools files for most
uses, to simplify maintenance.
Updated Kannada translation
docs: various small fixes

For the GPtrArray example, several variables declared on the same line
is harder to read and to work with (to move, remove or comment a single
variable declaration).