Added definitions for the following Hebrew characters as specified by the ISO/IEC 8859-8:1999:

LEFT-TO-RIGHT MARK (LRM)
RIGHT-TO-LEFT MARK (RLM)


sql/share/charsets/hebrew.xml:
  Added definitions for the following Hebrew characters as specified by the ISO/IEC 8859-8:1999:
  
  LEFT-TO-RIGHT MARK (LRM)
  RIGHT-TO-LEFT MARK (RLM)
strings/conf_to_src.c:
  Added a warning comment in the generated C source file.
strings/ctype-extra.c:
  Re-generated from sql/share/charsets/hebrew.xml
mysql-test/r/ctype_hebrew.result:
  Added the test case for bug #24037 "Lossy Hebrew to Unicode conversion"
mysql-test/t/ctype_hebrew.test:
  Added the test case for bug #24037 "Lossy Hebrew to Unicode conversion"