AppVeyor: add verbose entering/exiting messages to PowerShell scripts

- Added Write-Host statements to all .ps1 scripts in .appveyor/
- This aids in debugging build logs to identify script boundaries.

Assisted-by: Gemini

Author: bdbaddog

.appveyor/coverage_report.ps1

@@ -1,5 +1,7 @@
+Write-Host "Entering .appveyor/coverage_report.ps1"
 if ($env:COVERAGE -eq 1) {
     & $env:SCONS_PYTHON_BIN -m coverage combine;
     & $env:SCONS_PYTHON_BIN -m coverage report;
     & $env:SCONS_PYTHON_BIN -m coverage xml -i -o coverage_xml.xml;
 }
+Write-Host "Exiting .appveyor/coverage_report.ps1"

.appveyor/coverage_setup.ps1

@@ -1,3 +1,4 @@
+Write-Host "Entering .appveyor/coverage_setup.ps1"
 if ($env:COVERAGE -eq 1) {
     $env:COVERAGE_PROCESS_START = "$($env:APPVEYOR_BUILD_FOLDER)\.coveragerc";
     $env:COVERAGE_FILE = "$($env:APPVEYOR_BUILD_FOLDER)\.coverage";
@@ -13,3 +14,4 @@ if ($env:COVERAGE -eq 1) {
     Write-Host "$($env:COVERAGE_PROCESS_START)";
     Get-Content -Path "$($env:COVERAGE_PROCESS_START)";
 }
+Write-Host "Exiting .appveyor/coverage_setup.ps1"

.appveyor/exclude_tests.ps1

@@ -1,3 +1,4 @@
+Write-Host "Entering .appveyor/exclude_tests.ps1"
 New-Item -Name exclude_list.txt -ItemType File;
 
 # exclude VS 10.0 because it hangs the testing until this is resolved:
@@ -6,3 +7,4 @@ $workaround_image = "Visual Studio 2015";
 if ($env:APPVEYOR_BUILD_WORKER_IMAGE -eq $workaround_image) {
     Add-Content -Path 'exclude_list.txt' -Value 'test\MSVS\vs-10.0-exec.py';
 }
+Write-Host "Exiting .appveyor/exclude_tests.ps1"

.appveyor/ignore_git_bins.ps1

@@ -1,5 +1,7 @@
+Write-Host "Entering .appveyor/ignore_git_bins.ps1"
 dir "C:\Program Files\Git\usr\bin\x*.exe";
 if (Test-Path "C:\Program Files\Git\usr\bin\xsltproc.EXE" ) {
     Remove-Item  "C:\Program Files\Git\usr\bin\xsltproc.EXE" -ErrorAction Ignore;
 }
 dir "C:\Program Files\Git\usr\bin\x*.exe";
+Write-Host "Exiting .appveyor/ignore_git_bins.ps1"

.appveyor/install-cov.ps1

@@ -1,5 +1,7 @@
+Write-Host "Entering .appveyor/install-cov.ps1"
 if ($env:COVERAGE -eq 1) {
     $pythonExe = $env:SCONS_PYTHON_BIN
     $env:PYSITEDIR = & $pythonExe -c "import sys; print(sys.path[-1])"
     & $pythonExe -m pip install -U --progress-bar off coverage codecov
 }
+Write-Host "Exiting .appveyor/install-cov.ps1"

.appveyor/install.ps1

@@ -1,3 +1,4 @@
+Write-Host "Entering .appveyor/install.ps1"
 $pythonExe = "C:\$($env:WINPYTHON)\python.exe"
 
 # If the initial call to python --version fails, call "choco install %WINPYTHON%"
@@ -66,3 +67,4 @@ choco install --allow-empty-checksums dmd ldc swig vswhere xsltproc winflexbison
 
 # Show environment variables
 Get-ChildItem Env: | Sort-Object Name
+Write-Host "Exiting .appveyor/install.ps1"

.appveyor/run_tests.ps1

@@ -1,5 +1,4 @@
-
-
+Write-Host "Entering .appveyor/run_tests.ps1"
 Write-Host "COVERAGE: $env:COVERAGE"
 Write-Host "SCONS_PYTHON_BIN: $env:SCONS_PYTHON_BIN"
 
@@ -9,10 +8,12 @@ if ($env:COVERAGE -eq 1) {
     & "$env:SCONS_PYTHON_BIN" runtest.py -j 2 -t --exclude-list exclude_list.txt test/Actions
 }
 
-# Treat exit code 2 (some tests failed) as success for AppVeyor
+# Treat exit code 2 (some tests failed) as success for AppVeyor 
 # as per original configuration.
 if ($LastExitCode -eq 2 -or $LastExitCode -eq 0) {
+    Write-Host "Exiting .appveyor/run_tests.ps1"
     exit 0
 } else {
+    Write-Host "Exiting .appveyor/run_tests.ps1"
     exit $LastExitCode
 }