+ fix pound-sign mapping in acsc of linux2.6 entry (report by Ingo
Bruckl).
+ additional changes for building with Visual Studio C++ and msys2
(reports/patches by "Maarten Anonymous")
+ build-improvements for Windows 10 and MinGW (patch by Juergen
Pfeifer).
+ fix a typo in curs_printw.3x (patch by William Pursell).
+ fix two errors in infotocap which allowed indexing outside the
buffer (report/testcases by Zhang Gan).
+ update length of strings in infocmp's usage function to restore a
trailing null on the longest string (report/testcase by Zhang Gen).