Check_MK Werk 8579: Generalize Livestatus filter operators

ID: 8579 Title: Generalize Livestatus filter operators Component: Livestatus Level: 1 Class: New feature Version: 1.4.0i3 Previously, some filter operator did not work for numbers or had only a special meaning with certain columns. This has been generalized in a uniform way, so all operators work for numbers now, too. The operators <tt>~</tt>, <tt>=~</tt>, and <tt>~~</tt> interpret numbers as bit sets, and have the following meaning: <ul> <li><tt>x ~ y</tt> means: <tt>x</tt> is a superset of <tt>y</tt></li> <li><tt>x =~ y</tt> means: <tt>x</tt> is a subset of <tt>y</tt></li> <li><tt>x ~~ y</tt> means: <tt>x</tt> contains at least one element of <tt>y</tt></li> </ul> This is consistent with the way attribute list columns work and makes the Livestatus semantics more regular.