Add missing ignores.

.gitignore

@@ -1,5 +1,6 @@
 /c.bat
 /compilesettings.bat
+/setup-presign.bat
 /setup-sign.bat
 /Output
 

Files/.gitignore

@@ -3,3 +3,5 @@
 *.e32
 *.dll
 *.exe
+/ISCmplr.dll.issig
+/ISPP.dll.issig

ISHelp/.gitignore

@@ -1,3 +1,4 @@
-isxclasses_generated.xml
-isxfunc_generated.xml
-ispp_generated.xml
+/compilesettings.bat
+/isxclasses_generated.xml
+/isxfunc_generated.xml
+/ispp_generated.xml