- completed syntax for import declarations

- fixed a typo

SVN=117439

doc/go_lang.txt

@@ -1512,7 +1512,7 @@ Switch statements
 
 Switches provide multi-way execution.
 
-  SwitchStat = "switch" [ [ SimpleStat ";" ] "Expression ] "{" { CaseClause } "}" .
+  SwitchStat = "switch" [ [ SimpleStat ";" ] Expression ] "{" { CaseClause } "}" .
   CaseClause = CaseList StatementList [ ";" ] [ "fallthrough" [ ";" ] ] .
   CaseList = Case { Case } .
   Case = ( "case" ExpressionList | "default" ) ":" .
@@ -1686,6 +1686,7 @@ array elements (the values).
 
 TODO: is this right?
 
+
 Break statements
 ----
 
@@ -1762,8 +1763,9 @@ Import declarations
 A program can gain access to exported items from another package
 through an import declaration:
 
-  ImportDecl = "import" [ "." | PackageName ] PackageFileName .
-  PackageFileName = string_lit .
+  ImportDecl = "import" ( ImportSpec | "(" ImportSpecList [ ";" ] ")" ) .
+  ImportSpec = [ "." | PackageName ] PackageFileName .
+  ImportSpecList = ImportSpec { ";" ImportSpec } .
 
 An import statement makes the exported contents of the named
 package file accessible in this package.