improved --debugger switch; updated release plan

doc/advopt.txt

@@ -48,7 +48,6 @@ Advanced options:
   --os:SYMBOL               set the target operating system (cross-compilation)
   --cpu:SYMBOL              set the target processor (cross-compilation)
   --debuginfo               enables debug information
-  --debugger:on|off         turn Embedded Nim Debugger on|off
   -t, --passC:OPTION        pass an option to the C compiler
   -l, --passL:OPTION        pass an option to the linker
   --cincludes:DIR           modify the C compiler header search path
@@ -88,7 +87,5 @@ Advanced options:
   --parallelBuild:0|1|...   perform a parallel build
                             value = number of processors (0 for auto-detect)
   --verbosity:0|1|2|3       set Nim's verbosity level (1 is default)
-  --cs:none|partial         set case sensitivity level (default: none);
-                            do not use! this setting affects the whole language
   --experimental            enable experimental language features
   -v, --version             show detailed version information

doc/basicopt.txt

@@ -6,7 +6,6 @@ Command:
   //compile, c                compile project with default code generator (C)
   //doc                       generate the documentation for inputfile
   //doc2                      generate the documentation for the whole project
-  //i                         start Nim in interactive mode (limited)
 
 Arguments:
   arguments are passed to the program being run (if --run option is selected)
@@ -30,6 +29,7 @@ Options:
   --infChecks:on|off        turn Inf checks on|off
   --deadCodeElim:on|off     whole program dead code elimination on|off
   --opt:none|speed|size     optimize not at all or for speed|size
+  --debugger:native|endb    use native debugger (gdb) | ENDB (experimental)
   --app:console|gui|lib|staticlib
                             generate a console app|GUI app|DLL|static library
   -r, --run                 run the compiled program with given arguments