P0898R3 Standard Library Concepts: full wording

[concepts] Shorten stable names:

 * Remove ".lib"
 * Replace "concepts." with "concept." in the stable names of the subclauses that define specific concepts, and remove the "collection" tags (".corelang", ".object", ".compare", ".callable") so e.g. [concepts.lib.corelang.same] becomes [concept.same]
 * Replace ".corelang" with ".lang"
 * Rename [concepts.lib.synopsis] to [concepts.syn]
 * Rename [concepts.lib.general.equality] to [concepts.equality] and move up one level to avoid hanging paragraphs
 * Merge [concept.signed.int] and [concept.unsigned.int] into [concept.integral]

[concepts.lang] Retitle as "Language-related concepts"

Author: zygoloid

source/algorithms.tex

@@ -3108,7 +3108,7 @@
 \begin{note}
 For the overloads with an \tcode{ExecutionPolicy}, there may be a performance
 cost if \tcode{iterator_traits<ForwardIterator1>::value_type} is not
-\oldconcept{Move\-Constructible} (\tref{moveconstructible}).
+\oldconcept{\-Move\-Constructible} (\tref{moveconstructible}).
 \end{note}
 
 \pnum