Rename directory with Visual Studio solution

Name 'visualc_net' invokes old names for Visual Studio
(Visual Studio .NET 2002 or 2003), which has no relation to content of
this subdirectory.

Also, by renaming this directory we mitigate chance, that during
merge-in from svn/trunk git will automatically inject some values from
from upstream, incompatible version of solution files. By sheer
luck this might happen without causing a conflict. Never happened so
far, but there's no point in risking it.

.github/workflows/dormant/windows.yml

@@ -30,14 +30,14 @@ jobs:
         env:
           PATH: '${env:PATH};C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\amd64'
         run: |
-          cd visualc_net
+          cd vs
           MSBuild -m dosbox.sln -p:Configuration=Release
       - name:  Debug build
         shell: pwsh
         env:
           PATH: '${env:PATH};C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\amd64'
         run: |
-          cd visualc_net
+          cd vs
           MSBuild -m dosbox.sln -p:Configuration=Debug
 
 

.github/workflows/windows.yml

@@ -29,7 +29,7 @@ jobs:
         env:
           PATH: '${env:PATH};C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\amd64'
         run: |
-          cd visualc_net
+          cd vs
           MSBuild -m dosbox.sln -p:Configuration=${{ matrix.type }}
 
 

Makefile.am

@@ -1,7 +1,7 @@
 # Main Makefile for DOSBox
 
 EXTRA_DIST = autogen.sh
-SUBDIRS = src include docs visualc_net
+SUBDIRS = src include docs vs
 
 # Per the auto-tools clean guidelines:
 # https://www.gnu.org/savannah-checkouts/gnu/automake/manual/html_node/Clean.html#Clean

README.md

@@ -104,8 +104,8 @@ PowerShell, and run:
 
 These two steps will ensure that MSVC finds and links all dependencies.
 
-Start Visual Studio, open file: `visualc_net\dosbox.sln` and build all
-projects (Ctrl+Shift+B).
+Start Visual Studio, open file: `vs\dosbox.sln` and build all projects
+(Ctrl+Shift+B).
 
 
 ## Interop with SVN

configure.ac

@@ -646,7 +646,7 @@ src/misc/Makefile
 src/shell/Makefile
 src/platform/Makefile
 src/platform/visualc/Makefile
-visualc_net/Makefile
+vs/Makefile
 include/Makefile
 docs/Makefile
 ])