Add Ada config

ada-mode/doc/docstyle.texi

@@ -0,0 +1,19 @@
+@c Emacs documentation style settings
+@documentencoding UTF-8
+@c These two require Texinfo 5.0 or later, so we use the older
+@c equivalent @set variables supported in 4.11 and hence
+@ignore
+@codequotebacktick on
+@codequoteundirected on
+@end ignore
+@set txicodequoteundirected
+@set txicodequotebacktick
+@iftex
+@c It turns out TeX sometimes fails to hyphenate, so we help it here
+@hyphenation{au-to-mat-i-cal-ly}
+@hyphenation{spec-i-fied}
+@hyphenation{work-a-round}
+@hyphenation{work-a-rounds}
+@hyphenation{un-marked}
+@hyphenation{dic-tion-ary}
+@end iftex