Description: various typos spotted by lintian.
Authors: Nicolas Boulenguez <nicolas@debian.org>

--- a/gpr/src/gpr-ext.adb
+++ b/gpr/src/gpr-ext.adb
@@ -116,7 +116,7 @@
             then
                if not Silent then
                   Debug_Output
-                    ("Not overridding existing external reference '"
+                    ("Not overriding existing external reference '"
                      & External_Name & "', value was defined in "
                      & N.Source'Img);
                end if;
--- a/gpr/src/gpr-compilation-protocol.ads
+++ b/gpr/src/gpr-compilation-protocol.ads
@@ -185,7 +185,7 @@
       Root_Dir : String;
       Files    : File_Data_Set.Vector);
    --  Send a set of filenames and associated timestamps. Will receive a OK or
-   --  KO with the list of files to be transfered to the slave.
+   --  KO with the list of files to be transferred to the slave.
 
    procedure Send_End_Of_Compilation (Channel : Communication_Channel);
    --  Send an end of compilation signal, the slave will at this point be able
--- a/src/gprslave.adb
+++ b/src/gprslave.adb
@@ -900,7 +900,7 @@
       Define_Switch
         (Config, Hash'Access,
          "-s:", Long_Switch => "--hash=",
-         Help => "specifiy a hash, must match with master");
+         Help => "specify a hash, must match with master");
 
       Set_Usage (Config, Usage => "[switches]");