LUCENE-5565: reverting spatial API change; leave in trunk for now

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_8@1588399 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5615: catch invalid per-segment delete counts when writing the segment

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LUCENE-5617: don't rely on directory metadata for stored fields 'maxpointer', change to hard check

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LUCENE-5616: remove FieldInfos leniency

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Fix copy/paste-o javadocs (merged trunk r1588670)

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Merged revision(s) 1588871, 1588890 from lucene/dev/branches/branch_4x:
LUCENE-5612: fix NativeFSLockFactory to pass LockStressTest

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SOLR-5897: JQuery file listed as version 1.7.2 but actually contains 1.4.3 code (merge r1588898, r1588913, r1588914)

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SOLR-5897: clarify what has been done for CHANGES.txt (merge r1588954)

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SOLR-6000: fix javadoc typo (merge r1588964 and r1588967)

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Merged revision(s) 1589072 from lucene/dev/branches/branch_4x:
Merged revision(s) 1589071 from lucene/dev/trunk:
Fix upgrading instructions in CHANGES.txt to include recent Java 7 instructions

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Merged revision(s) 1589106 from lucene/dev/branches/branch_4x:
Merged revision(s) 1589105 from lucene/dev/trunk:
Create staging URL without https, because it makes smoketester take much longer. Also remove obsolete extra changes dir

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pulling in changes from solr2052 on trunk