Fix spelling errors using 'codespell' tool

codegen/valaccodememberaccessmodule.vala

@@ -455,7 +455,7 @@ public abstract class Vala.CCodeMemberAccessModule : CCodeControlFlowModule {
 					(param.direction == ParameterDirection.IN && type_as_struct != null && !type_as_struct.is_simple_type () && !result.value_type.nullable)) {
 					result.cvalue = new CCodeUnaryExpression (CCodeUnaryOperator.POINTER_INDIRECTION, new CCodeIdentifier (get_variable_cname (name)));
 				} else {
-					// Property setters of non simple structs shall replace all occurences
+					// Property setters of non simple structs shall replace all occurrences
 					// of the "value" formal parameter with a dereferencing version of that
 					// parameter.
 					if (current_property_accessor != null &&

codegen/valaccodemethodmodule.vala

@@ -988,12 +988,12 @@ public abstract class Vala.CCodeMethodModule : CCodeStructModule {
 		foreach (Parameter param in m.get_parameters ()) {
 			if (param.direction != ParameterDirection.OUT) {
 				if ((direction & 1) == 0) {
-					// no in paramters
+					// no in parameters
 					continue;
 				}
 			} else {
 				if ((direction & 2) == 0) {
-					// no out paramters
+					// no out parameters
 					continue;
 				}
 			}

doc/vala-gen-introspect.1

@@ -20,7 +20,7 @@ After compilation, the following command generates a GI for pango:
 
 .SH OPTIONS
 .TP
-This command currenly takes no command line options.
+This command currently takes no command line options.
 .SH SEE ALSO
 .BR vapigen (1)
 

gee/collection.vala

@@ -50,7 +50,7 @@ public abstract class Vala.Collection<G> : Iterable<G> {
 	public abstract bool add (G item);
 
 	/**
-	 * Removes the first occurence of an item from this collection. Must not
+	 * Removes the first occurrence of an item from this collection. Must not
 	 * be called on read-only collections.
 	 *
 	 * @param item the item to remove from the collection

gee/list.vala

@@ -41,10 +41,10 @@ public abstract class Vala.List<G> : Collection<G> {
 	public abstract void set (int index, G item);
 
 	/**
-	 * Returns the index of the first occurence of the specified item in
+	 * Returns the index of the first occurrence of the specified item in
 	 * this list.
 	 *
-	 * @return the index of the first occurence of the specified item, or
+	 * @return the index of the first occurrence of the specified item, or
 	 *         -1 if the item could not be found
 	 */
 	public abstract int index_of (G item);

gobject-introspection/scanner.c

@@ -1501,7 +1501,7 @@ g_igenerator_add_include_idl (GIGenerator *igenerator,
   modules = g_idl_parse_file (filename, &error);
   if (error)
     {
-      g_printerr ("An error occured while parsing %s: %s\n",
+      g_printerr ("An error occurred while parsing %s: %s\n",
 		  filename, error->message);
       return;
     }

vala/valacodecontext.vala

@@ -329,7 +329,7 @@ public class Vala.CodeContext {
 	 */
 	public bool add_external_package (string pkg) {
 		if (has_package (pkg)) {
-			// ignore multiple occurences of the same package
+			// ignore multiple occurrences of the same package
 			return true;
 		}
 

vala/valaelementaccess.vala

@@ -29,7 +29,7 @@ using GLib;
  */
 public class Vala.ElementAccess : Expression {
 	/**
-	 * Expression representing the container on wich we want to access.
+	 * Expression representing the container on which we want to access.
 	 */
 	public Expression container {
 		get {

vala/valagenieparser.vala

@@ -2648,7 +2648,7 @@ public class Vala.Genie.Parser : CodeVisitor {
 		if (ModifierFlags.PRIVATE in flags) {
 			cl.access = SymbolAccessibility.PRIVATE;
 		} else {
-			/* class must always be Public unless its name starts wtih underscore */
+			/* class must always be Public unless its name starts with underscore */
 			if (sym.name[0] == '_') {
 				cl.access = SymbolAccessibility.PRIVATE;
 			} else {

vapi/metadata/Pango-1.0.metadata

@@ -65,7 +65,7 @@ read_line
 scan_string
   .out out=false
 
-// Backwards compatability
+// Backwards compatibility
 AttrClass
   .copy type="GLib.Callback" skip=false
   .destroy type="GLib.Callback" skip=false