Fixed build issues

- Linking now with g++ instead of gcc with 'compile-dist' to solve problems with handlersocket/client
- Fixed bug in heap tables when doing handler read next-prev over last row


BUILD/compile-dist:
  - Linking now with g++ instead of gcc with 'compile-dist' to solve problems with handlersocket/client
cmd-line-utils/libedit/vi.c:
  Fixed compiler warning about not checking return value for write
mysql-test/r/index_intersect.result:
  Updated results (missed this file in my last push)
mysql-test/suite/handler/aria.result:
  Updated test results
mysql-test/suite/handler/handler.inc:
  Changed test to use read next/read prev on key where there are duplicates that can come in different order depending on system
  Added testing of read next-prev over last row and read prev-next around first row
mysql-test/suite/handler/heap.result:
  Updated test results
mysql-test/suite/handler/init.inc:
  More rows to test
mysql-test/suite/handler/innodb.result:
  Updated test results
mysql-test/suite/handler/interface.result:
  Updated test results
mysql-test/suite/handler/myisam.result:
  Updated test results
mysql-test/t/variables-big.test:
  Fixed test to not fail on windows
mysql-test/valgrind.supp:
  Removed not matching fun: to get rid of valgrind warning
storage/heap/hp_rfirst.c:
  Added state so that we know if we have an active position in the index.
storage/heap/hp_rkey.c:
  Added state so that we know if we have an active position in the index.
storage/heap/hp_rnext.c:
  Handle reading several next after finding the last row (this caused a crash before)
storage/heap/hp_rprev.c:
  Handle reading several prev after finding the first row (this caused a crash before)
storage/xtradb/buf/buf0buf.c:
  Fixed compiler warning about uninitialized value

mysql-test/suite/handler/init.inc

@@ -30,4 +30,4 @@ eval create table t1 (a int, b char(10), key a $key_type (a), key b $key_type (a
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");