* sem_util.ads, sem_util.adb, par.adb, par_util.adb
(Formal_Error_Msg, Formal_Error_Msg_N, Formal_Error_Msg_SP): move
procedures out of these packages.
* errout.ads, errout.adb
(Formal_Error_Msg, Formal_Error_Msg_N, Formal_Error_Msg_SP): move
procedures in of this package
(Formal_Error_Msg_NE): new procedure for wrapper on Error_Msg_NE
* par-ch5.adb (Parse_Decls_Begin_End): issue syntax error in SPARK mode
on misplaced later vs initial declarations, like in Ada 83
* sem_attr.adb (Processing for Analyze_Attribute): issue error in
formal mode on attribute of private type whose full type declaration
is not visible
* sem_ch3.adb (Analyze_Declarations): issue error in formal mode on a
package declaration inside a package specification
(Analyze_Full_Type_Declaration): issue error in formal mode on
controlled type or discriminant type
* sem_ch6.adb (Analyze_Subprogram_Specification): only issue error on
user-defined operator means that it should come from the source
(New_Overloaded_Entity): issue error in formal mode on overloaded
entity.
* sem_ch6.ads, sem_ch13.ads: typos in comments.
2011-08-01 Thomas Quinot <quinot@adacore.com>
* atree.adb: Minor reformatting.
* checks.adb: Minor reformatting.