Fix Issue #2285 (partial): Add ghostscript to cygwin install to support PDFSTREAM (#2292)

Add ghostscript to cygwin install

Author: fghalasz

installers/cygwin/medley.iss

@@ -64,7 +64,7 @@ Name: "{group}\Medley\Uninstall_Medley"; Filename: "{uninstallexe}"
 ; Name: "{group}\Medley\Medley"; Filename: "powershell"; Parameters: "-NoExit -File {app}\medley.ps1 --help"; IconFilename: "{app}\Medley.ico"
 
 [Run]
-Filename: "{app}\cygwin\setup-x86_64.exe"; Parameters: "--quiet-mode --no-admin --wait --no-shortcuts --no-write-registry --verbose --root ""{app}"" --site https://mirrors.kernel.org/sourceware/cygwin --only-site --local-package-dir ""{app}\cygwin"" --packages nano,xdg-utils"; StatusMsg: "Installing Cygwin ..."
+Filename: "{app}\cygwin\setup-x86_64.exe"; Parameters: "--quiet-mode --no-admin --wait --no-shortcuts --no-write-registry --verbose --root ""{app}"" --site https://mirrors.kernel.org/sourceware/cygwin --only-site --local-package-dir ""{app}\cygwin"" --packages nano,xdg-utils,ghostscript,ghostscript-fonts-other"; StatusMsg: "Installing Cygwin ..."
 Filename: "{app}\bin\bash"; Parameters: "-login -c 'sed -i -e s/^none/#none/ /etc/fstab && echo none / cygdrive binary,posix=0,user 0 0 >>/etc/fstab'"; Flags: runhidden
 Filename: "tar"; Parameters: "-x -z -C ""{app}"" -f ""{app}\install\medley.tgz"""; Flags: runhidden; StatusMsg: "Installing Medley ..."
 Filename: "powershell"; Parameters: "remove-item -force -recurse ""{app}\maiko"""; Flags: runhidden; StatusMsg: "Installing Maiko ..."