Log Message:
bc: Update to 1.07.1

Changelog:
Changes in bc from 1.07 to 1.07.1.
    Fixed ibase extension causing problems for read()
    Fixed parallel make problem.

Changes in dc 1.4 to 1.4.1.
    Fixed dc "Q" comanmd bug.

Changes in bc from 1.06 to 1.07.
    Added void functions.
    Bug fixes:
	fixes bug in load_code introduced by mathlib string storage in 1.06.
	fix to get long options working.
	signal code clean-up.
	fixed a bug in the AVL tree routines.
	fixed math library to work properly when called with ibase not 10.
	fixed a symbol table bug when using more than 32 names.
	removed a double free.
    Added base 17 to 36 for ibase.
    Fixed some memory leaks.
    Various small tweaks and doc bug fixes.

Changes in dc from 1.3 to 1.4:
    Recognize and handle tail recursion.
    Add 'r' and 'R' commands for stack manipulation.
    Finally fix dc to trap interrupts, like the documentation has said it
    should: aborts any executing macros, but does not exit the program.
    Bug fixes.
    Miscellaneous code clean-up.
    Changed to detect directories and generate errors.
    Detects and reports on any output errors; exits non-success.