Index: .travis.yml
===================================================================
diff -u -r1544e5c005ac27a7806c8b11d806c3f58d3ed2c9 -r9808a2f313759926b7881c8c0c283d13bcf55371
--- .travis.yml	(.../.travis.yml)	(revision 1544e5c005ac27a7806c8b11d806c3f58d3ed2c9)
+++ .travis.yml	(.../.travis.yml)	(revision 9808a2f313759926b7881c8c0c283d13bcf55371)
@@ -40,7 +40,7 @@
     - os: linux
       dist: xenial
       compiler: clang
-      env: TCLTAG=core-8-7-a1
+      env: TCLTAG=core-8-7-a3
     - os: linux
       dist: xenial
       compiler: gcc-7
@@ -50,15 +50,15 @@
             - ubuntu-toolchain-r-test
           packages:
             - g++-7
-      env: TCLTAG=core-8-7-a1
+      env: TCLTAG=core-8-7-a3
     - os: osx
       osx_image: xcode10.2
       compiler: clang
-      env: TCLTAG=core-8-7-a1
+      env: TCLTAG=core-8-7-a3
     - os: osx
       osx_image: xcode10.2	
       compiler: gcc-8
-      env: TCLTAG=core-8-7-a1
+      env: TCLTAG=core-8-7-a3
     # ----------------------------
     - os: linux
       dist: xenial
@@ -111,7 +111,7 @@
     - os: linux
       dist: xenial
       compiler: clang
-      env: TCLTAG=core-8-6-9
+      env: TCLTAG=core-8-6-10
     - os: linux
       dist: xenial
       compiler: gcc-7
@@ -121,16 +121,16 @@
             - ubuntu-toolchain-r-test
           packages:
             - g++-7
-      env: TCLTAG=core-8-6-9
+      env: TCLTAG=core-8-6-10
     - os: osx
       osx_image: xcode10.2
       compiler: clang
-      env: TCLTAG=core-8-6-9
+      env: TCLTAG=core-8-6-10
     - os: osx
       osx_image: xcode10.2	
       compiler: gcc-8
       env:
-        - TCLTAG=core-8-6-9
+        - TCLTAG=core-8-6-10
   # ----------------------------
     - os: linux
       dist: xenial
Index: appveyor.yml
===================================================================
diff -u -r5c433a5045d6fdcde0b8ecafbc99f5ba649e8699 -r9808a2f313759926b7881c8c0c283d13bcf55371
--- appveyor.yml	(.../appveyor.yml)	(revision 5c433a5045d6fdcde0b8ecafbc99f5ba649e8699)
+++ appveyor.yml	(.../appveyor.yml)	(revision 9808a2f313759926b7881c8c0c283d13bcf55371)
@@ -21,18 +21,26 @@
     TOOLCHAIN: autoconf-tea
   - TCLTAG: core-8-6-branch
     TOOLCHAIN: nmake-tea
-  - TCLTAG: core-8-6-9
+  - TCLTAG: core-8-6-10
     TOOLCHAIN: autoconf-tea
-  - TCLTAG: core-8-6-9
+  - TCLTAG: core-8-6-10
     TOOLCHAIN: nmake-tea
   - TCLTAG: core-8-5-branch
     TOOLCHAIN: autoconf-tea
+  - TCLTAG: core-8-5-branch
+    TOOLCHAIN: nmake-tea
   - TCLTAG: core-8-5-19
-    TOOLCHAIN: autoconf-tea	
-  - TCLTAG: core-8-7-a1
     TOOLCHAIN: autoconf-tea
+  - TCLTAG: core-8-5-19
+    TOOLCHAIN: nmake-tea	
+  - TCLTAG: core-8-7-a3
+    TOOLCHAIN: autoconf-tea
+  - TCLTAG: core-8-7-a3
+    TOOLCHAIN: nmake-tea
   - TCLTAG: core-8-branch
     TOOLCHAIN: autoconf-tea
+- TCLTAG: core-8-branch
+    TOOLCHAIN: nmake-tea
 
 matrix:
   allow_failures:
@@ -59,7 +67,7 @@
   # Needed to align MSYS and Windows HOME dirs
   - if "%TOOLCHAIN%" == "autoconf-tea" set HOME=C:\Users\appveyor
   # - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "cd && echo \"export PATH=/c/projects/nsf-2ylk0/mingw64/bin:/c/msys64/usr/bin:\$PATH; \" >> .profile"
-  - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "cd && echo \"export PATH=/c/projects/nsf-2ylk0/mingw64/bin:\$PATH; export MSYSTEM=MINGW64; alias make='/c/msys64/usr/bin/make'; shopt -s expand_aliases; \" >> .profile"
+  - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "cd && echo \"export PATH=/c/projects/nsf-2ylk0/mingw64/bin:\$PATH; export MSYSTEM=MINGW64; export MINGW_PREFIX=/c; alias make='/c/msys64/usr/bin/make'; shopt -s expand_aliases; \" >> .profile"
   - if "%TOOLCHAIN%" == "nmake-tea" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
   - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "sh --version"
   - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "make --version"