motif: update to 2.3.8.

This is a bug fix release.

* Fixed bug 1660: TextField leaves a residual cursor shadow on focus lose
* Fixed bug 1659: Many cases of typos in horizontal/vertical conditions in the code
* Fixed bug 1658: motif does crash on OpenSuse Leap 42.2
* Fixed bug 1656: TabStack with tabSelectColor and Right causes BadMatch Error
* Fixed bug 1625: Open Motif build fails due to weak aliases on Darwin with cl
* Fixed bug 1655: Motif 2.3.6 and 2.3.4 do not work with XQuartz 2.7.9 and later
* Fixed bug 1652: Add support for more Cyrillic locales
* Fixed bug 1650: Memory leak in DataF.c
* Fixed bug 1651: motif-2.3.5 tarball contains lib/Xm/Xm.h file generated by configure
* Fixed bug 1665: Closing open menus with mouse click disables keyboard shortcut

(wiz)