Radium 7.1.87 released

[Kjetil Matheussen]

Some minor bug fixes. Most important fix is for moving the first
velocity node of a note, which behaved buggy in some situations.


Changes 7.1.86 -> 7.1.87
* NSM: Fix if "getenv" returns #f instead of empty
string.
* Scheme: Fix converting character to string, which
suddenly stopped working.
* Editor: Fix moving first velocity node, which
sometimes behaved very strange.
* Editor: Fix holding shift not working to circumvent
other notes limiting where a can be placed.
* Sequencer: Fix clicking the seqtrack number
creating an undo.
* GUI: Reduce default maximum number of menu elements
that can be shown at once, from 200 to 100. 200 might
fill up the screen and sometimes even freeze the
program, at least if using fvwm.
* Fix tooltip for sequencer button in mixer. (akimaze)
* Fix compilation on systems with newer binutils dev
files (yzzyx)