split up bad int assignment errors for more modular testing

invalid/syntaxErr/variables/badintAssignments.wacc

-# bad integer assignments
+# bad integer assignments - multiple syntax errors
 
 # Output:
 # #syntax_error#

invalid/syntaxErr/variables/badintAssignments1.wacc

+# bad integer assignment - whitespace should delimit ints
+
+# Output:
+# #syntax_error#
+
+# Exit:
+# 100
+
+# Program:
+
+begin
+  int x = 22 0
+end 

invalid/syntaxErr/variables/badintAssignments2.wacc

+# bad integer assignments - malformed int literal
+
+# Output:
+# #syntax_error#
+
+# Exit:
+# 100
+
+# Program:
+
+begin
+  int y = 1A4
+end