and whether JENKINS is set

so that local build can find them

build steps are now:
make configure (if needed)
make
sudo make install

or:
make fullbuild
sudo make install

* [linux] convert kb icons to png instead of bmp

make them antialiased 64x64 so that can be resized ok in the
ibus status indicator and the ibus keyboard selector

* [linux] move linux specific gitignore to linux/.gitignore

resize icons back to 16x16 on load to display in km-config

[Windows] Update splash screens and about screens to show SIL logo

[Windows] Remove 10.0 version content and make versioning less visible for subsequent releases

[Windows] Refactor WiX installers for Windows, Windows Engine and Developer to remove versioned paths and registry for simplified future upgrades

[linux] Linux buildsys

[Windows] Remove manual edit requirement for keymanversion.* and fixup build dependencies that arise as a result

move restore of package kmfl.xml to after the rest of uninstall

rename tmpbuild make target to tmpinstall

sudo make install now installs keyman-config as well