Add new Unicode property type: 'provisional'

Several Egyptian Hieroglyph properties are provisional.  That fact was
not previously noted.

Author: khwilliamson

charclass_invlists.inc

@@ -458914,7 +458914,7 @@ static const U8 WB_dfa_table[] = {
  * 4be1c18e7b121d951018065b453bb05083f624c8f905ce8be7c0f354c9097c95 lib/unicore/extracted/DLineBreak.txt
  * 786833e0a3f5ec0c0cd0940e4c15f730f3a92163f354ecd7dede28a70c0fa892 lib/unicore/extracted/DNumType.txt
  * 00b43cc5c9b86a834f82389c4537f103e652821387daa556f0bd220f6c23007e lib/unicore/extracted/DNumValues.txt
- * 60d6468a78df93eaef78d39930a582a05871f050f7398d8bbdd33c1779a74649 lib/unicore/mktables
+ * 518480ac527435d219fae0eb9ecb725e8a314d8eea02cec349622cfa50837638 lib/unicore/mktables
  * 63f771c327e92574fbd77919586079c38f669058a5e6b67ccec385ef8fcde882 lib/unicore/version
  * 0a6b5ab33bb1026531f816efe81aea1a8ffcd34a27cbea37dd6a70a63d73c844 regen/charset_translations.pl
  * c7ff8e0d207d3538c7feb4a1a152b159e5e902d20293b303569ea8323e84633e regen/mk_PL_charclass.pl

lib/unicore/mktables

@@ -1269,6 +1269,9 @@ my $A_bold_stabilized = "An 'B<$STABILIZED>'";
 my $OBSOLETE = 'O';
 my $a_bold_obsolete = "an 'B<$OBSOLETE>'";
 my $A_bold_obsolete = "An 'B<$OBSOLETE>'";
+my $PROVISIONAL = '?';
+my $a_bold_provisional = "a 'B<$PROVISIONAL>'";
+my $A_bold_provisional = "A 'B<$PROVISIONAL>'";
 
 # Aliases can also have an extra status:
 my $INTERNAL_ALIAS = 'P';
@@ -1278,6 +1281,7 @@ my %status_past_participles = (
     $STABILIZED => 'stabilized',
     $OBSOLETE => 'obsolete',
     $DEPRECATED => 'deprecated',
+    $PROVISIONAL => 'provisional',
     $INTERNAL_ALIAS => 'reserved for Perl core internal use only',
 );
 
@@ -13411,6 +13415,7 @@ sub setup_Unikemet{
         Property->new("kEH_$property",
                       Default_Map => $default,
                       Type => $type,
+                      Status => $PROVISIONAL,
                      );
     }
 
@@ -17534,6 +17539,10 @@ by this property.
 =item B<$DISCOURAGED> means use of this form is discouraged, and may not be
 stable.
 
+=item B<$PROVISIONAL> means this property is considered provisional by
+Unicode, and may be changed or removed in some future version of the Unicode
+Standard.
+
 =back
 
 $formatted_properties

lib/unicore/uni_keywords.pl

@@ -79,7 +79,7 @@
  * 4be1c18e7b121d951018065b453bb05083f624c8f905ce8be7c0f354c9097c95 lib/unicore/extracted/DLineBreak.txt
  * 786833e0a3f5ec0c0cd0940e4c15f730f3a92163f354ecd7dede28a70c0fa892 lib/unicore/extracted/DNumType.txt
  * 00b43cc5c9b86a834f82389c4537f103e652821387daa556f0bd220f6c23007e lib/unicore/extracted/DNumValues.txt
- * 60d6468a78df93eaef78d39930a582a05871f050f7398d8bbdd33c1779a74649 lib/unicore/mktables
+ * 518480ac527435d219fae0eb9ecb725e8a314d8eea02cec349622cfa50837638 lib/unicore/mktables
  * 63f771c327e92574fbd77919586079c38f669058a5e6b67ccec385ef8fcde882 lib/unicore/version
  * 0a6b5ab33bb1026531f816efe81aea1a8ffcd34a27cbea37dd6a70a63d73c844 regen/charset_translations.pl
  * c7ff8e0d207d3538c7feb4a1a152b159e5e902d20293b303569ea8323e84633e regen/mk_PL_charclass.pl