add pdcurses support to travis ci windows test builds

pdcurses is obtained on-the-fly from the github source

.travis.yml

@@ -81,6 +81,9 @@ matrix:
         - export LIB=/c/Program\ Files\ \(x86\)/Windows\ Kits/10/lib/$WKITVER/ucrt/x86:$LIB
         - export LIB=/c/Program\ Files\ \(x86\)/Windows\ Kits/10/lib/$WKITVER/um/x86:$LIB
 #       - export
+        - git clone https://github.com/wmcbrine/PDCurses.git ../pdcurses
+        - export ADD_CURSES=Y
+        - export PDCURSES_TOP=../../pdcurses
         - cd src
         - cp ../sys/winnt/Makefile.msc ./Makefile
         - nmake install
@@ -88,6 +91,9 @@ matrix:
 #     install: choco install mingw
       env: HINTS=windows-mingw
       script:
+        - git clone https://github.com/wmcbrine/PDCurses.git ../pdcurses
+        - export ADD_CURSES=Y
+        - export PDCURSES_TOP=../../pdcurses
         - cd src
         - cp ../sys/winnt/Makefile.gcc ./Makefile
         - mingw32-make install
@@ -104,4 +110,3 @@ notifications:
     recipients:
 #      - devteam@nethack.org
 
-